https://oscourse.win Allegro improved their Kafka produce tail latency by over 80% when they switched from ext4 to xfs. What I enjoyed most about this article is the detailed analysis and tweaking the team made to ext4 before considering switching to xfs. This is a classic case of how a good tech blog looks like in my opinion.  0:00 Intro 0:30 Summary 2:35 How Kafka Works? 5:00 Producers Writes are Slow 7:10 Tracing Kafka Protocol  12:00 Tracing Kernel System Calls 16:00 Journaled File Systems 21:00 Improving ext4 26:00 Switching to XFS Blog https://blog.allegro.tech/2024/03/kafka-performance-analysis.html